219411423 has 80 divisors (see below), whose sum is σ = 413343744. Its totient is φ = 112674240.

The previous prime is 219411407. The next prime is 219411431. The reversal of 219411423 is 324114912.

It is a happy number.

It is not a de Polignac number, because 219411423 - 2⁴ = 219411407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219411403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 791961 + ... + 792237.

Almost surely, 2^219411423 is an apocalyptic number.

219411423 is a deficient number, since it is larger than the sum of its proper divisors (193932321).

219411423 is a wasteful number, since it uses less digits than its factorization.

219411423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 425 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 219411423 is about 14812.5427594320. The cubic root of 219411423 is about 603.1422401508.

The spelling of 219411423 in words is "two hundred nineteen million, four hundred eleven thousand, four hundred twenty-three".